"Medium cappucino and a pain au chocolate for Esther!"
Part of Ellie's teenage part-time job at the coffee shop, Coffee Palace. (And proving that little-used bunny Esther is indeed part of my main canon...)
First seen here
And she's still wary of giving Rachel free coffees, even though she is both allowed to and encouraged to by her shift manager. She's just that type of person really. She also had problems when one of her old teachers came in. He gave her his first name when he ordered, but she couldn't help but call him Mr Anderson anyway.
(Mousegirl Hannah also can only call him Mr Anderson, but that's a completely different story!)